Rootstock rather stout, woody, emitting tufts of lvs and slender stolons up to 2 dm. or more long, which root and produce new tufts of lvs. Lvs imparipinnate, up to c. 15 cm. long including slender, sparsely pilose petioles; stipules scarious; lflts 11-15, alternating with minute, incised to entire pairs; larger lflts c. 1-1·5 cm. long, subsessile, oblong-obovate to suborbicular, sharply serrate, glab. or nearly so above, white silky-tomentose below, teeth penicillate. Fls solitary, up to 1·5 cm. or rather more diam., on slender peduncles up to 15 cm. long. Calyx pilose, lobes ovate-apiculate, up to 5 mm. long; bractlets deeply toothed. Petals 5, bright yellow, glab., suborbicular, shortly clawed, up to nearly 1 cm. long; stamens ∞, filaments short. Receptacle villous, achenes subreniform, finally glab.

2n = 28

2n = 28

Procumbent perennial arising from a stout stock, up to 10-(30) cm tall at flowering, stoloniferous; stems brownish green, slender and hairy. Lvs in rosettes, basal or at nodes, up to 150-(350) mm long, imparipinnate; leaflets in up to 7 pairs, with reduced leaflets between, elliptic to obovate or suborbicular, up to 20-(35) mm long, green above, silvery tomentose below, serrate. Fls axillary, solitary, 5-merous. Epicalyx segments ± obovate, ± = sepals, deeply toothed. Sepals tomentose. Petals orbicular, up to 10 mm long, yellow. Achenes smooth or very faintly rugose.